Bronkhorst Multibus - Manual (Page 12)

BRONKHORST ®
Page 12 Operational instructions for digital multibus instruments 9.17.023
3 PARAMETERS AND PROPERTIES
3.1 G
ENERAL
Digital instruments consist of a microcontroller with several processes running simultaneously for:
• Measuring sensor value
• Reading analog input signal
• Digital signal processing
• Driving a valve
• Setting analog output signal
• Communication with the world outside
Each process needs its own specific parameters in order to function correctly. These parameter values are accessible
through the available interface(s) to influence the process behavior (for instance Control behavior or alarm settings).
These parameters can easily be controlled by end-users for more flexible use of the instruments. Bronkhorst offers
special software tooling for these purposes.
3.2 B
RONKHORST SOFTWARE
FlowDDE is software which allows users to communicate with digital instruments in a standard way. It uses the RS232
interface on the instrument which is linked to a computer with a standard Bronkhorst cable. It converts the
instrument parameters to DDE commands. DDE (Dynamic Data Exchange) is a technology for communication between
multiple applications under Microsoft Windows.
FlowView and FlowPlot use FlowDDE as a server. In short:
FlowView :Windows application for the readout and/or control of 12 instruments (default), configurable up to
99 instruments.
FlowPlot :Windows application for monitoring and optimizing. (Value versus time on screen)